A commuter worker is someone who lives in one place but travels to another place, often on a regular basis, to work or do their job.
For example, imagine you live in a city called A and work in a city called B. The distance between A and B is quite far, and it would take a long time to travel from A to B every day. So instead, you might stay in B during the weekdays and then go back home to A on the weekends. This means you are a commuter worker because you travel back and forth between these two places for work.
Another way to think about it is if you have a friend who lives in a different town and comes to play with you often. They are kind of like a commuter friend, because even though they don't live with you all the time, they visit regularly to spend time with you.
Being a commuter worker is a common thing for people who work in big cities or have jobs that require them to travel to different locations. But it can also be tiring and stressful to spend so much time traveling, so it's important to take care of yourself and find ways to make the trips more comfortable.